Overall Thread Thread+Neck Shank Size of Length of length length length dia. square square L ℓ ℓn Ds K ℓk ZELX SS SP Spiral Fluted Taps for Stainless Steels Size Class Code Chamfer L ℓ ℓn Ds K ℓk No. of Type (for blind hole) Spiral Fluted Taps (inch) (inch) (inch) (inch) (inch) (inch) flutes 1 1/2-12UNF GH5 Y84711 2.5P 6.375 0.787 - 1.233 0.925 1.125 4 4 1 3/4-5UNC GH7 Y84714 2.5P 7 1.772 - 1.43 1.072 1.25 4 4 2-4.5UNC GH7 Y84715 2.5P 7.625 1.969 - 1.644 1.233 1.375 4 4 (for through hole) Spiral Fluted Taps (for through hole) Spiral Pointed Taps Hand Taps Carbide Taps Cemented Roll Taps Simple Inspection Tools Pipe Taps Thread Mills Dies Center Drills Centering Tools ANSI SP-16 203